Monitoring Bcp Using Vc Gasket Breakout Harness - Navistar International DT 466 Diagnostic/Troubleshooting Manual

Monitoring BCP using VC Gasket Breakout
Harness
NOTE: Do this procedure, if an EST is not available.
This is an alternate method.
Tools
• VC Gasket Breakout Harness
• Digital Multimeter (DMM)
Procedure
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or
vehicle, read all safety instructions in the "Safety
Information" section of this manual.
WARNING: To avoid serious personal injury,
possible death or damage to the engine or vehicle
– comply with the following:
When running the engine in the service bay, make
sure the parking brake is set, the transmission is
in neutral, and the wheels are blocked.
NOTE: BCP should be zero, when engine brake is
inactive. BCP values may fluctuate as much as 50
psi. Electromagnetic Interference (EMI) or ground
shift can cause an insignificant voltage shift that does
not indicate a problem. This should be equal to KOEO
BCP signal voltage.
1. See "DT 466 Performance Specifications" –
Appendix A (page 595) or "DT 570 and HT 570
Performance Specifications" – Appendix B (page
619) and Section 7 for specifications, operational
voltages, and values.
Form.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
5 HARD START AND NO START DIAGNOSTICS
Record on Diagnostic
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Figure 185 Valve cover gasket
1. Front of engine
2. Pass-through connector for BCP sensor
3. Pass-through connector for brake shut-off valve
4. Pass-through connector for ICP sensor
2. Disconnect engine harness connector from the
pass-through connector for the BCP sensor.
Figure 186 VC Gasket Breakout Harness to
pass-through connector for BCP sensor
3. Connect VC Gasket Breakout Harness to
pass-through connector and engine harness.
EGES-270-1
161